Vania



I J. E. OLVIS. AUTOMATICALLY OPERATED sTEREoPncoN. APPucATION m'su an18. 1911. RENEWED MAR. 31, 1919.

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J. E. OLVIS. AUTOMATICALLY OPERATED STEREOPTICON. APPLICATION FILED MAY18. I917: RENEWED MAR. 31. 1919.,

Patented Nov. 11,- 1919.

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Witness 1. E. OLVIS. I AUTOMATICALLY OPERATED STEREOPT-ICON. APPLICATIONFILED MAY l3. l9. RENEWED MAR. 31. T9T9.

Patented Nov. 11, 1919.

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. n. I 1w. I. EJ1- m .0 e 1 1 u h/ a. b A0 1 an 5 I 1n m 8 0 d w a 4 n wu a 9 Z t m I 2 a f a f UNITED STATES PATENT- OFFICE.

JAMES E. OLVIS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR '10 WILLIAMS,BROWN & EABILE INC., 0F PHILADELPHIA, PENNSYLVANIA, A CORPORATION OFPENNSYL- VANIA.

AUTOMATICALLY-OPERATED STEBEOPTICON.

Specification o t letters Patent. Patented NOV. 11, 1919.

Application filed May 18, 1917, Serial No. 169,487. Renewed March31,1919. Serial No. 288,623.

' To all whom it may concern:

Be it known that I, JAMES E. OLvIs, a citizen of the United States,residin at the city of Philadelphia, in the county 0 Philadelphia' andState of Pennsylvania, have invented certain new and useful Improvementsin Automatically-Operating Stereopticons, of which the following is aspecification. Y

My invention has relation to an automatically operating apparatus forpicking up and retarding or stopping slides at any predetermined time inthe focal plane of an objective and thereafter-lifting them automatically out of such plane and depositing them in a magazine.

My invention has relation further to the timed automatic stopping of theslides presented in the focal plane of the objective in respect to theirrespective travel to and from the focal .plane of said objective.

The slides are picked upand conveyed either singly or in pairs and arepresented in the focal plane of the objective or obwere successivelypresented to the obj ective.

jectives where they momentarily tarry and are then lifted out of suchplane and deposited in a magazine therefor, Without handling through theemployment of timingcontrol means acting periodically to pause in thetravel of the slides in the plane of the objective or objectives and bysuitable means operated by a motor in freeing and returning the slidesto the magazine; the same embracing characteristics as well, asessential main features of my'present invention.

Hitherto it was proposed to mounted on a" carrier and intermittentlyactuated by automaticmeans, whereby they The different slides requiringdifferent ad justment ofthe objective' 'to obtain sharp and clear imagesfromall of the slides on the carrier so that it": became necessary tomanually focus the apparatus for each indi-- vidual slide as presentedin the focal plane of the objective. 7 a

According to my invention after first focusing a slide or slidespresented in the focal plane of the objective or objectives this focusis maintained and the feeding of the slide or slides into such focalplane is entirely automatic, as is also the pausing of said slide orslides in such plane and moverovide a stereopticon in which a series ofsides were of timed cutting off or on of light thereto as the slide isfed into and from said focal plane for automatically insuring reliablelighting of a slide as presented and in view-' ing, as thrown upon adistant screen or wall. The nature and general scope; of my presentinvention will bemore fully understood from the following descriptiontaken in connection withthe accompanying drawforming part hereof, inwhichigure 1, is a side elevational view of an automatic operatingstereopticon, embodying the salient features of my invention,

showing the objective and lamps, motor and operating mechanism, slidereceiving magazine, slide feed means and automatic shutter controloperated in timed relation to the slide feed; the said slide feedoperating to pick up and present slides separately or in pairs, in thefocal plane of the objective or objectives, for exposure through thesame.

Fig. 2, is a vertical central sectional View. of the apparatus, showingapair of objectives, lamps, magazine slide feed and release means fordepositing and moving forward the slides so deposited in the magazine.

Fig. 3 is a diagrammatic view of the electric circuits with the switchesand in which circuits the motor and lamps are included a fragmentaryside view of the framing into which the operating members" and mechanismof the apparatus are mountas Well as the means for controlling the oped,the magazine, consisting of an inclined carrier 6, is located in thebase of the said framing a, and as shown is arran ed to contain ahundred or more indivi ual slides which are respectively pushed forwardone by one to the front of the framing a, into the path of two endlesssprocket chains 1), b traveling over a series of sprockets b 6 arrangedin the respective corners of the framing a, as clearly shown in Fig. 1.These sprocket chains at suitable distances apart therein, are providedwith fingers b 6 which are preferably cup-shaped in form. These fingersengage each of the extreme pushed forward slidese, of the series of themagazine 6, for example,'as shown in Figs. 1 and 2, and which fingerslift the same into the focal plane of the objective or objectives 0, 0arranged projecting from the front of the framin a, Figs. 1 and 2, withlamps, d, located in rear thereof within the framing a. The motor f, foroperating the sprocket chains I), N, having the fingers, for engagingthe slides presented in the focal planes of the objective is preferablylocated beneath the lower objective as shown in Figs..1 and 2. Thesprocket chainsopcrate to lift and carry the slides after exposurebackward along the upper portion of the framing a, and finally lower thesame into a position for a releasing means to be hereinafter more fullyexplained to force each slide onto the magazine-carrier b, to cause thesame thereafter to be fed forward successively through the magazine, forreuse. The motor shaft 7, carries a belt-pulley, not shown, for the belt7", encircling a pulley wheel 7, journaled to a studpin if, on one sideof'the framing a, and also aving secured thereto a pinion f, in meshwith a gear 7", of a train of pinions and gears 7,- the lowermost one ofwhich gears f", is mounted on the shaft P", which is provided with oneof the sprocket wheels 6 as clearly shown in Fig. 4. A shaft f, hasmounted thereon rotary cam-fingers f, f", adapted to engage the slidesas they are desited on the carrier 6 and force the same fdrward. Thecarrier strips are formed with L-shaped depressions, in which the barsof the slides rest. The rear ends of these strips are without suchdepressions but the bars of the slides contact therewith and, the chainslower the same and the slides remain on the strips in leaving thefingers. The cams then engage the slide just de osited, and force thesame forward until t e ends of the bars drop into the L-shapeddepressions noted. Of course the slides move forward on the carrier bygravity. v

A clock train 9 is provided for the urpose of controlling the stoppingof the siides for projection. The means controlled by the train is a'switch having a fixed contact g,

and a movable contact 9", the latter includmg an arm mounted on an arborof the clock train and operated through the motive means of such train,as the usual spring, to a position to close the switch. Mechanicalmeans, hereinafter referred to, are provided for opening the switch, andthis operation is, of course, against the tension of the clock spring,so that the latter is at all times set for opening the switch, when freeto act. The shaft f, carries a cam g, which when operated depresses thesaid arm g, to open thetime switch 9 and thus to rea-k the circuitthrough the motor.

h is a weighted rocking lever which is fulcrumed to a vertical supportit; the opposite end of said lever forms one element of a switch If, theother element h, being fastened to the side of the framing a, with wiresh h, leading therefrom respectively,

I, for cutting on and oil the motor or to stop the same. To the extremeforward end of the fulcrumed rocking lever h, is pivoted a vertical rodh, connected with a bell crank lever h", journaled tothe side framing a,and by a slanting rod h, to the shutter, within the objective, thearrangement being such that when the switch is open the shutter likewiseis open in the objective for transmission of light therethrough from theelectric lam d, in the rear thereof, and when the said switch is closed,the reverse 'to the source of electric supply and motor condition of theshutter to that above ex- 15 and 16 therefrom are arranged with themotor when the hand switch 12, is shifted to esta lish the said circuit.In the branch 17 is arrangedthe switch 9 and in the branch 18, theswitch h. The rotation of the cam g, opens'the switch g, and before theswitch closes, opens switch It and stops the motor f. When this occursthe slide e, 18 in the focal plane of the objective 0, and the shutterhas been opened by the switch It, to project the film or slide upon thedistant screen. The slide is held in the focal plane'until the switch 9is closed by the clock mechanism 9 starting thereby the motor for thefurther feeding of the slides out of the focal plane of the objectiveand the bringing of another slide into such plane for use. In case anyparticular slide is to remain for any indefinite period in the fo- 40 Yof the carrier for opening said'switches in not start because the switch9 is open,

hence the slide will remain in the focal plane of the objective untilthe switch g, preferably in the form of a push button is closed, whichwill then start the motor f, so that slides in succession thereafter maybe fed into the focal plane of the objective 0, for

ex osure therethrough.

aving thus described the nature and objects of my invention, 'what Iclaim as new and desire to secure by Letters Patent is 1. Astereopticon, a magazine therein for a series of slides, an endlesscarrier for picking up the foremost slide from the magazine, elevatingthe same and delivering it to the rear of the magazine, a motor foroperating.

the carrier, two inde ndent circuits for the motor, an automaticallyoperated timing mechan1sm for one circuit and means for the othercircuit controlled by movement of said carrier.

2. A stereopticon, a magazine for a series of slides, an endless carrierfor picking up the slides from and delivering the same to the magazine,a motor for operatin the carrier, two independent circuits for t emotor, a time controlled switch for one circuit, and a' switch for theother circuit controlled by the movement of the carrier.

3. A stereopticon, a slide magazinetherein, an endless carrier fortaking the slides successively from and delivering the same to themagazine, a motor for operating .the carrier, a time controlled circuitfor the motor, a carrier controlled circuit for. the motor, and meansoperated in the movement succession.

4. A stereopticon, a slide magazine theresuccessively from anddelivering the same to.

I the magazine, a motor for operating the carrier, two independentcircuits for the motor, a switch for one circuit opened in the movementof the carrier,independent means for closing said switch following apredetermined interval, a switch for the other circuit, and means foropening the last named switch following the opening and prior to theclosing of the first named switch.

' 5. A stereopticon, a slide magazine therein, an endless carrier fortaking the slides successively from and delivering the. same to themagazine,. a motor for operating the carrier, a time controlled circuitfor the motor, means for opening said circuit independent of the timecontrolled means, and a carrier controlled circuit for the motor.

6. A stereopticon, a slide magazine therein, anendless carrier for theslides, a motor for operatin circuits for t motor, a time switch for onecircuit; aspring motor for closing said switch, a switch for the othercircuit, and a .single cam operated in the .movement' of the carrier forsuccessively opening said switches.

7. A stereopticon, a slide magazine therein, an endless carrier for theslides, an objective, a shutter therefor, a motor for operating theendless carrier, a time-controlled the carrier, two independent .in, anendless carrier for taking the slides circuit for the motor, a carrieroperated circuit for the motor, and means controlled in the governing ofthe earner-operated circuit for moving the shutter.

In witness whereof, I'have hereunto set my signature in the presence oftwo subscribing witnesses.

. JAMES E. OLVIS. Witnessesz.

J. WALTER DoUeLAs, MARIAN GRooM.

